Abstract A simple yet innovative approach for the construction of multi-substituted allylbenzenes 14, 16 and 18 with ‘donor-acceptor’ functionalities has been delineated through base-mediated ring transformation of 6-aryl-2H-pyran-2-ones 13, 15 and 17 respectively with commercially available 5-hexen-2-one 11 as carbanion source. The reactions were carried out at room temperature without using any catalyst or organometallic reagents with excellent functional group tolerance. Moreover, the present method is possible alternate route to access allylbenzenes apart from usual metal-catalyzed cross-coupling reactions. Graphical Abstract

中文翻译：

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使用环转化策略的多功能烯丙基苯的碱基介导替代路线

摘要 通过碱基介导的 6-芳基-2H-吡喃-2-酮 13、15 环转化，描述了一种简单而创新的方法，用于构建具有“供体-受体”功能的多取代烯丙基苯 14、16 和 18和 17 分别以市售的 5-hexen-2-one 11 作为碳负离子源。反应在室温下进行，不使用任何具有优异官能团耐受性的催化剂或有机金属试剂。此外，除了通常的金属催化交叉偶联反应之外，本方法是获得烯丙基苯的可能替代途径。图形概要